Ski doo seems engine revs drop at 55-60 mph and it stops accelerating - Snowmobile World : Your #1 Snowmobile Forum
 
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post #1 of 1 (permalink) Old 01-27-2020, 10:24 PM Thread Starter
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Ski doo seems engine revs drop at 55-60 mph and it stops accelerating

I ride a 2001 ski doo touring 500fan, and over the past year have spent a lot of time fixing issues with it (it was sitting unprotected in a backyard for 5 years). I cleaned the carbs, fixed some electrical contact issues, and redid much of the fuel system. It used to bog down when I went past quarter throttle, but that was fixed when I rebuilt the carbs. However now, when I go past 55-60 mph, the engine revs drop and it barely accelerates, even at WOT. It doesn’t seem to be a fuel issue, since I can climb steep hills at wot, and as long as I don’t go past 55 mph it acts normally and gets full power. It seems almost like a factory included speed limiter. Does anyone have any idea what is causing this/how I could fix it?
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